The decline of serial killers and rise of the sharing economy

A 2011 study, “Extreme Killing: Understanding Serial and Mass Murder,” found that the number of serial killers in the United States began rising in the 1960s, peaked in the 1980s, and has been falling ever since. “There is definitely an intriguing connection between the decline of serial killers and the rise of this sharing culture,” says Schecter, “These startups reflect how much our anxieties have eased.”